CVE-2021-38492

Summary

CVECVE-2021-38492
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2021-11-03 01:15:00 UTC
Updated2022-12-09 19:19:00 UTC
DescriptionWhen delegating navigations to the operating system, Firefox would accept the `mk` scheme which might allow attackers to launch pages and execute scripts in Internet Explorer in unprivileged mode. *This bug only affects Firefox for Windows. Other operating systems are unaffected.*. This vulnerability affects Firefox < 92, Thunderbird < 91.1, Thunderbird < 78.14, Firefox ESR < 78.14, and Firefox ESR < 91.1.

Risk And Classification

Problem Types: NVD-CWE-noinfo

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Microsoft Windows - All All All
Application Mozilla Firefox All All All All
Application Mozilla Firefox Esr All All All All
Application Mozilla Thunderbird All All All All

References

ReferenceSourceLinkTags
Security Vulnerabilities fixed in Firefox ESR 78.14 — Mozilla MISC www.mozilla.org
Security Vulnerabilities fixed in Firefox 92 — Mozilla MISC www.mozilla.org
Security Vulnerabilities fixed in Thunderbird 78.14 — Mozilla MISC www.mozilla.org
Access Denied MISC bugzilla.mozilla.org
Mozilla Thunderbird: Multiple Vulnerabilities (GLSA 202208-14) — Gentoo security GENTOO security.gentoo.org
Security Vulnerabilities fixed in Firefox ESR 91.1 — Mozilla MISC www.mozilla.org
Security Vulnerabilities fixed in Thunderbird 91.1 — Mozilla MISC www.mozilla.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 375833 Mozilla Firefox Multiple Vulnerabilities (MFSA2021-38)
  • 375834 Mozilla Firefox ESR Multiple Vulnerabilities (MFSA2021-39)
  • 375836 Mozilla Firefox ESR Multiple Vulnerabilities (MFSA2021-40)
  • 375837 Mozilla Thunderbird Multiple Vulnerabilities (MFSA2021-41)
  • 375838 Mozilla Thunderbird Multiple Vulnerabilities (MFSA2021-42)
  • 501552 Alpine Linux Security Update for firefox-esr
  • 502069 Alpine Linux Security Update for firefox-esr
  • 502080 Alpine Linux Security Update for firefox
  • 502381 Alpine Linux Security Update for thunderbird
  • 503632 Alpine Linux Security Update for thunderbird
  • 503634 Alpine Linux Security Update for thunderbird
  • 503650 Alpine Linux Security Update for thunderbird
  • 503669 Alpine Linux Security Update for thunderbird
  • 503851 Alpine Linux Security Update for firefox
  • 504812 Alpine Linux Security Update for firefox-esr
  • 506260 Alpine Linux Security Update for thunderbird
  • 710585 Gentoo Linux Mozilla Thunderbird Multiple Vulnerabilities (GLSA 202208-14)
  • 751210 SUSE Enterprise Linux Security Update for MozillaFirefox (SUSE-SU-2021:3331-1)
  • 751226 OpenSUSE Security Update for MozillaFirefox (openSUSE-SU-2021:3331-1)
  • 751237 OpenSUSE Security Update for MozillaFirefox (openSUSE-SU-2021:3451-1)
  • 751246 OpenSUSE Security Update for MozillaFirefox (openSUSE-SU-2021:1367-1)
  • 751369 SUSE Enterprise Linux Security Update for MozillaFirefox (SUSE-SU-2021:3191-1)
  • 751542 OpenSUSE Security Update for MozillaThunderbird (openSUSE-SU-2021:4150-1)
  • 751566 OpenSUSE Security Update for MozillaThunderbird (openSUSE-SU-2021:1635-1)
  • 752111 SUSE Enterprise Linux Security Update for MozillaFirefox (SUSE-SU-2022:1582-1)
  • 752113 SUSE Enterprise Linux Security Update for MozillaFirefox (SUSE-SU-2022:1577-1)
© CVE.report 2026 |

Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. It is the responsibility of user to evaluate the accuracy, completeness or usefulness of any information, opinion, advice or other content. EACH USER WILL BE SOLELY RESPONSIBLE FOR ANY consequences of his or her direct or indirect use of this web site. ALL WARRANTIES OF ANY KIND ARE EXPRESSLY DISCLAIMED. This site will NOT BE LIABLE FOR ANY DIRECT, INDIRECT or any other kind of loss.

CVE, CWE, and OVAL are registred trademarks of The MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. This site includes MITRE data granted under the following license.

CVE.report and Source URL Uptime Status status.cve.report